Rather than buying packets of Mexican spice mix from that well known company, make your own. It's easy, allows you to tailor it to your taste. The recipe is easy to adjust to make different quantities.

The Main ingredients that give that authentic flavour are the oregano, cumin seeds and chili powder. I would suggest you keep those at the levels here and adjust the other items if you have a desire to tinker.

Everything is in teaspoons to make it easy to make different quantities - use tablespoons at the same rate to make more.